This is just after the final battle in Metal Gear Solid 3. Do not watch unless you've played the game. Trust me, it's an awesome game.
I do not take credit for making this cutscene or recording it. I just simply did a quick search and didn't see it on YouTube so I figured I could put it up. And I'll put up some other stuff from MGS games if they are under 10 minutes. Happy Gaming. :D